3 Answers
3

No you probably don't (other than what David said, and maybe ypbind, but you said not NIS). The nsswitch.conf file isn't for a daemon in particular, it is actually a file used by the C library for various system calls.

Be aware that existing processes will not be aware of the changes to nsswitch.conf. The nsswitch.conf(5) page states, "Within each process that uses nsswitch.conf, the entire file is read only once; if the file is later changed, the process will continue using the old configuration."